Examples of java.net.HttpURLConnection

java.net.HttpURLConnection
3.org/pub/WWW/Protocols/"> the spec for details.
Each HttpURLConnection instance is used to make a single request but the underlying network connection to the HTTP server may be transparently shared by other instances. Calling the close() methods on the InputStream or OutputStream of an HttpURLConnection after a request may free network resources associated with this instance but has no effect on any shared persistent connection. Calling the disconnect() method may close the underlying socket if a persistent connection is otherwise idle at that time. @see java.net.HttpURLConnection#disconnect() @since JDK1.1

      sParams += aParams[p].getName()+"="+URLEncoder.encode(aParams[p].getValue(), "UTF-8");
      if (p<aParams.length-1) sParams += "&";
    } // next
  } // fi


    HttpURLConnection oCon = (HttpURLConnection) oUrl.openConnection();
    
    oCon.setUseCaches(false);
    oCon.setFollowRedirects(false);
    oCon.setInstanceFollowRedirects(false);
    oCon.setDoInput (true);


    oCon.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
  oCon.setRequestProperty("Content-Length", String.valueOf(sParams.getBytes().length));
  oCon.setFixedLengthStreamingMode(sParams.getBytes().length);
    oCon.setDoOutput(true);
  oCon.setRequestMethod("POST");
  OutputStreamWriter oWrt = new OutputStreamWriter(oCon.getOutputStream());
    oWrt.write(sParams);
    oWrt.flush();
    oWrt.close();


  int responseCode = oCon.getResponseCode();


  if (responseCode == HttpURLConnection.HTTP_MOVED_PERM ||
    responseCode == HttpURLConnection.HTTP_MOVED_TEMP) {


      HttpRequest oMoved = new HttpRequest(oCon.getHeaderField("Location"), oUrl, "POST", aParams);    
    oRetVal = oMoved.post();
    sUrl = oMoved.url();
  } else if (responseCode == HttpURLConnection.HTTP_OK ||
      responseCode == HttpURLConnection.HTTP_ACCEPTED) {
    InputStream oStm = oCon.getInputStream();
    String sEnc = oCon.getContentEncoding();
    if (sEnc==null) {
      ByteArrayOutputStream oBya = new ByteArrayOutputStream();
      new StreamPipe().between(oStm, oBya);
      oRetVal = oBya.toByteArray();
    } else {
      int c;
      StringBuffer oDoc = new StringBuffer();
      Reader oRdr = new InputStreamReader(oStm, sEnc);
      while ((c=oRdr.read())!=-1) {
        oDoc.append((char) c);
      } // wend
      oRdr.close();
      oRetVal = oDoc.toString();
    }
    oStm.close();
  } else {
    throw new IOException(String.valueOf(responseCode));
  }
  oCon.disconnect();
  return oRetVal;
  } // post

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  if (null==oReferUrl)
    oUrl = new URL(sUrl);
  else
    oUrl = new URL(oReferUrl, sUrl);


    HttpURLConnection oCon = (HttpURLConnection) oUrl.openConnection();
    
    oCon.setUseCaches(false);
    oCon.setFollowRedirects(false);
    oCon.setInstanceFollowRedirects(false);
    oCon.setDoInput (true);


    oCon.setDoOutput(true);
  oCon.setRequestMethod("GET");
  OutputStreamWriter oWrt = new OutputStreamWriter(oCon.getOutputStream());
    oWrt.flush();
    oWrt.close();


  int responseCode = oCon.getResponseCode();


  if (responseCode == HttpURLConnection.HTTP_MOVED_PERM ||
    responseCode == HttpURLConnection.HTTP_MOVED_TEMP) {
      HttpRequest oMoved = new HttpRequest(oCon.getHeaderField("Location"), oUrl, "GET", null);
    oRetVal = oMoved.get();
    sUrl = oMoved.url();
  } else if (responseCode == HttpURLConnection.HTTP_OK ||
      responseCode == HttpURLConnection.HTTP_ACCEPTED) {
    InputStream oStm = oCon.getInputStream();
    String sEnc = oCon.getContentEncoding();
    if (sEnc==null) {
      ByteArrayOutputStream oBya = new ByteArrayOutputStream();
      new StreamPipe().between(oStm, oBya);
      oRetVal = oBya.toByteArray();
    } else {
      int c;
      StringBuffer oDoc = new StringBuffer();
      Reader oRdr = new InputStreamReader(oStm, sEnc);
      while ((c=oRdr.read())!=-1) {
        oDoc.append((char) c);
      } // wend
      oRdr.close();
      oRetVal = oDoc.toString();
    }
    oStm.close();
  } else {
    throw new IOException(String.valueOf(responseCode));
  }
  oCon.disconnect();
  return oRetVal;
  } // post

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    if (DebugFile.trace) {
      DebugFile.writeln("new URL("+sUrl+"username="+sUsr+"&password=..."+sFrm+"&to="+sMsisdn+"&text=...)");
    }


    URL oUrl = new URL(sQry);
      HttpURLConnection oCon = (HttpURLConnection) oUrl.openConnection();
      int iStatusCode = oCon.getResponseCode();


    if (DebugFile.trace) {
      DebugFile.writeln("response code is "+String.valueOf(iStatusCode));
    }


      switch (iStatusCode) {
        case 200:
          oRdr = new BufferedReader(new InputStreamReader(oCon.getInputStream(), "UTF-8"));
        sLin = oRdr.readLine();
            while( null != sLin ) {
              sLin = oRdr.readLine();
            } // wend
        oRdr.close();
        oRsp = new SMSResponse(oMsg.messageId(), new Date(), SMSResponse.ErrorCode.NONE, SMSResponse.StatusCode.POSITIVE_ACK, "");
        break;
        case 422:
          SMSResponse.ErrorCode eErr = SMSResponse.ErrorCode.UNKNOWN_ERROR;
          oRdr = new BufferedReader(new InputStreamReader(oCon.getErrorStream(), "UTF-8"));
        sErr = "";
        sLin = oRdr.readLine();
            while( null != sLin ) {
              if (sLin.indexOf("número de móvil válido")>0) eErr = SMSResponse.ErrorCode.INVALID_MSISDN;
              if (sLin.indexOf("es demasiado largo")>0) eErr = SMSResponse.ErrorCode.TEXT_TOO_LONG;
              if (sLin.indexOf("Usuario o contraseña erróneos")>0) eErr = SMSResponse.ErrorCode.AUTHENTICATION_FAILURE;
              sErr += sLin + "\n";
              sLin = oRdr.readLine();
            } // wend
        oRdr.close();
        oRsp = new SMSResponse(oMsg.messageId(), new Date(), eErr, SMSResponse.StatusCode.NEGATIVE_FAILED_DELIVERY, sErr);
        break;
        default:
            throw new IOException("Invalid HTTP response Code "+String.valueOf(iStatusCode));
      } // end switch  
    
    oCon.disconnect();


    if (DebugFile.trace) {
      DebugFile.decIdent();
      DebugFile.writeln("End SMSPushRealidadFutura.push() : " + oRsp.toString());
    }

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      } // next
    } // fi (aFiles)
  } else if (sSourceURI.startsWith("http://")) {
    try {
        URL oUrl = new URL(sSourceURI);
      HttpURLConnection oCon = (HttpURLConnection) oUrl.openConnection();
      int iResponseCode = oCon.getResponseCode();
      oCon.disconnect();
      bExists = (iResponseCode>=200 && iResponseCode<=299);
      } catch (MalformedURLException mue) {
        throw new IOException(mue.getMessage());
      }
  } else if (sSourceURI.startsWith("https://")) {
    try {
        URL oUrl = new URL(sSourceURI);
      HttpsURLConnection oCon = (HttpsURLConnection) oUrl.openConnection();
      int iResponseCode = oCon.getResponseCode();
      oCon.disconnect();
      bExists = (iResponseCode>=200 && iResponseCode<=299);
      } catch (MalformedURLException mue) {
        throw new IOException(mue.getMessage());
      }
  }

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  {
    int httpReturnCode = -1;
    
    // Try to provide the HTTP response code
    if (conn instanceof HttpURLConnection) {
      HttpURLConnection hconn = (HttpURLConnection) conn;
      try {
        httpReturnCode = hconn.getResponseCode();
        message += " (HTTP response code: " + httpReturnCode + ")";
        
      }
      catch (Exception exc) {}
    }

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    String methodName, Object[] arguments, Type returnType, 
    Map<String, String> extraHeaders)
    throws Exception {


    // create URLConnection
    HttpURLConnection con = (HttpURLConnection)serviceUrl.openConnection(connectionProxy);
    con.setConnectTimeout(connectionTimeoutMillis);
    con.setReadTimeout(readTimeoutMillis);
    con.setAllowUserInteraction(false);
    con.setDefaultUseCaches(false);
    con.setDoInput(true);
    con.setDoOutput(true);
    con.setUseCaches(false);
    con.setInstanceFollowRedirects(true);
    con.setRequestMethod("POST");
    
    // add headers
    for (Entry<String, String> entry : headers.entrySet()) {
      con.setRequestProperty(entry.getKey(), entry.getValue());
    }
    for (Entry<String, String> entry : extraHeaders.entrySet()) {
      con.setRequestProperty(entry.getKey(), entry.getValue());
    }
    con.setRequestProperty("Content-Type", "application/json-rpc");
    
    // open the connection
    con.connect();


    // invoke it
    super.invoke(methodName, arguments, con.getOutputStream());


    // read and return value
    return super.readResponse(returnType, con.getInputStream());
  }

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                            urlCon.setDoOutput(true);
                            urlCon.setUseCaches(false); // Enable tunneling.
                            if (urlCon instanceof HttpURLConnection) {
                                // The DOM L3 LS CR says if we are writing to an HTTP URI
                                // it is to be done with an HTTP PUT. 
                                HttpURLConnection httpCon = (HttpURLConnection) urlCon;
                                httpCon.setRequestMethod("PUT");
                            }
                            out = urlCon.getOutputStream();
                        }
                        ser.setOutputByteStream(out);
                    }

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                urlCon.setDoOutput(true);
                urlCon.setUseCaches(false); // Enable tunneling.
                if (urlCon instanceof HttpURLConnection) {
                    // The DOM L3 LS CR says if we are writing to an HTTP URI
                    // it is to be done with an HTTP PUT. 
                    HttpURLConnection httpCon = (HttpURLConnection) urlCon;
                    httpCon.setRequestMethod("PUT");
                }
                out = urlCon.getOutputStream();
            }
            ser.setOutputByteStream(out);

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    }


    private Object invoke(RemoteInvocation invocation)
            throws Exception {


        HttpURLConnection conn = (HttpURLConnection) remoteURL.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestProperty("ContentType", REQUEST_CONTENT_TYPE);
        conn.setRequestMethod("POST");
        OutputStream os = conn.getOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(os);
        try {
            oos.writeObject(invocation);
            oos.flush();
        } catch (ObjectStreamException e) {
            throw new RuntimeException(e);
        }


        /* read the response */
        InputStream is = conn.getInputStream();
        ObjectInputStream ois = new ObjectInputStream(is);
        InvocationResult result = (InvocationResult) ois.readObject();


        ois.read(); // jsse connection pooling hack
        ois.close();

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    if (conn != null)
    {
      if (conn instanceof HttpURLConnection)
      {
        final HttpURLConnection huc = (HttpURLConnection) conn;
        huc.disconnect();
      }
      // TODO: others
    }
    
    connected = false;

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